some-coercion

JavaScript performance comparison

Revision 3 of this test case created

Info

Sometimes coercion may be logically needed ... here a test against a common case.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    for(var r, c = [], i = 0; i < 0xFFFE; i++) c[i] = i;
    c = String.fromCharCode.apply(String, c).split("");
    i = String.fromCharCode(i);
   
    function compareObject(str) {
      return str == this;
    }
   
    function compareCasted(str) {
      return str === String(this);
    }
};
</script>

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Testing in unknown unknown
Test Ops/sec
coercion
r = c.some(compareObject, i);
pending…
cast
r = c.some(compareCasted, i);
pending…

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